Intel Core Ultra 9 285 Specs in 2026: Full Breakdown

The Intel Core Ultra 9 285 is a locked, 65W-class desktop processor with 24 cores (8 Performance and 16 Efficient), 24 threads, a maximum turbo of 5.6 GHz, 36 MB of L3 cache and 40 MB of L2 cache, built for the LGA 1851 socket. It is the non-K sibling of the better-known Core Ultra 9 285K, and the main difference is power and tuning: the 285 trades the unlocked multiplier and the high power limit for a lower base rating and cooler running. This guide lists the specifications that matter, explains what they mean in daily use, and compares the chip with its closest alternatives.

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Core Ultra 9 285 Specifications at a Glance

The figures below follow Intel’s published specification page for the processor and match the main third-party databases.

One note on sources: at least one third-party site lists a lower turbo power figure of 159W. Intel’s 182W number matches CPU Benchmark and NanoReview, so use it for power supply and cooling planning.

What 65W Base and 182W Turbo Actually Mean

Processor base power is the power level at which Intel guarantees the base frequency under a sustained workload. Maximum turbo power is the ceiling the chip may draw for short or sustained periods when thermal and motherboard limits allow. For the 285, that gap is large: 65W to 182W. In practice, a motherboard that follows Intel’s default limits lets the processor boost aggressively for a while, and a board that enforces a strict 65W limit makes it slower in long all-core jobs.

This is why two identical 285 processors can perform differently in different systems. A prebuilt with a small cooler and a conservative power limit settles near the lower end, while a DIY build with a strong cooler and a board that allows the 182W ceiling keeps higher clocks longer. When comparing benchmark numbers, always check the power limits used.

Core Layout: Why 8 P-Cores and 16 E-Cores

Performance cores are large, fast and handle latency-sensitive work such as game logic and single-threaded applications. Efficient cores are smaller and pack more throughput per square millimeter, which helps rendering, compiling and file compression. Arrow Lake removed Hyper-Threading, so each core runs one thread. The 285’s 24 threads therefore come from 24 physical cores, a different design from a processor with fewer cores and simultaneous multithreading. For heavy parallel jobs, 16 E-cores add serious throughput; for games, the 8 P-cores are what count.

A quick calculation shows the idea. If the P-cores run at 5.6 GHz and the E-cores at around 4.6 GHz under light loading, the aggregate clock-cycles per second across 24 cores is far higher than a 12-core chip at the same speeds. Real throughput depends on instruction rates per cycle, which differ between P and E cores, so treat the arithmetic as an intuition, not a prediction.

Cache and Memory

The 285 pairs 36 MB of shared L3 with 40 MB of total L2 across its cores. That is a generous amount, but cache size alone does not explain gaming results. AMD’s X3D chips use stacked cache to reach a much larger L3, and in many games they lead for that reason. Intel’s strategy relies on raw core strength and fast memory. Arrow Lake supports DDR5 only, with official speeds that began at DDR5-6400 on the first Core Ultra 200S chips, and the platform handles faster kits on capable boards. The newer CUDIMM modules are supported on 800-series boards and can reach higher speeds with greater stability.

For a 285 build, a 32 GB kit (two 16 GB modules) is the minimum for a chip of this class, and 64 GB makes sense for video editing, virtual machines and 3D work. Always populate two slots for dual-channel mode.

Integrated Graphics and NPU

The 285 includes a small Xe-based integrated GPU with four Xe cores, enough for desktop display, video playback and hardware-accelerated media encoding, and an NPU for AI features. Neither is meant for gaming. If you are building a workstation or a gaming PC, plan a discrete graphics card, but keep in mind that the integrated graphics are useful for diagnostics and as a fallback.

Platform: Socket, Chipsets and PCIe

The processor uses the LGA 1851 socket and works with Intel 800-series chipsets such as Z890, B860 and H810. It offers PCIe 5.0 for a graphics card and for NVMe storage, along with additional PCIe 4.0 lanes for more drives. Because the 285 is locked, a Z890 board mostly adds I/O, connectivity and power delivery, not overclocking. A B860 board with solid VRMs is often sufficient, provided the board lets the processor reach its turbo power limits. Check the board’s VRM heatsinks and reviews if you plan sustained all-core work.

Core Ultra 9 285 vs 285K vs 285T vs 285HX

The names are easy to confuse. The 285HX is a laptop processor, not a desktop chip, and its inclusion in search results often misleads buyers. If you want a desktop part with no overclocking and easier cooling, the 285 is the one. If you want the highest sustained clocks, the 285K is the sibling to consider, and for tight enclosures, the 285T.

How It Compares With Competing Chips

The 2026 Arrow Lake refresh matters here. Intel’s Core Ultra 7 270K Plus carries the same 24-core layout and cache as the 285K family and, according to launch coverage, raises memory support and fabric speeds. That makes the older Ultra 9 285 less distinctive than it was at launch. If you find the 285 at a tier close to a 270K Plus, check current reviews for gaming differences before deciding. For pure multi-threaded workloads, the Ryzen 9 9950X remains a strong rival because of its Hyper-Threading, and for gaming the X3D parts lead in many titles.

Performance Expectations by Workload

Specifications only become useful when mapped to the tasks you run. The table below gives a qualitative guide based on the architecture and published specifications, not measured scores.

Common Setup Mistakes With Arrow Lake

1. Not updating the BIOS. Early Arrow Lake firmware had stability and performance quirks, and updates from the motherboard maker address many of them. Update before installing your operating system.
2. Leaving memory at default speed. Enable the memory profile in the BIOS so the kit runs at its rated speed, then verify stability.
3. Using an outdated Windows build. Arrow Lake relies on the operating system scheduler to place threads on the right core type. Keep Windows and the chipset drivers current.
4. Ignoring the power limit settings. Boards ship with different defaults. Check whether yours follows Intel’s recommended profile or enforces a lower limit that reduces sustained speed.
5. Skipping the cooler mounting check. LGA 1851 uses the same cooler hole spacing as LGA 1700, but some mounting pressure and contact differences matter, so confirm compatibility with the cooler maker’s socket list.

Reading the Name: Intel Core Ultra 9 285 Decoded

Intel’s naming for the second Core Ultra series follows a pattern. “Ultra 9” is the tier, with 3, 5, 7 and 9 indicating increasing performance. The “2” in 285 marks the series (second generation), and the following digits indicate the position within the tier. Letter suffixes tell you the segment: K for unlocked desktop, F for no integrated graphics, T for low power and HX for high-performance laptops. Without a suffix, the desktop chip is a locked, standard-power model. Knowing this prevents buying the wrong chip, such as ordering a mobile part or a chip without graphics when you wanted a display output from the motherboard.

Upgrade Path and Longevity

LGA 1851 launched with Arrow Lake, and its future depends on Intel’s roadmap. Intel’s refresh arrived on the same socket in 2026, which gave existing buyers a drop-in option. Coverage of the next generation, Nova Lake, indicates a new socket will likely be required, so the 285 is probably near the end of the line for this platform. If long-term upgradability matters, an AM5 board keeps more options open. If you want a processor to use for five or more years without swapping the CPU, 24 cores with solid single-thread speed offer longevity, and the main constraint becomes memory capacity and graphics card choices.

On resale, flagship locked processors tend to retain less value than unlocked or X3D equivalents, so buy the 285 because it suits your use, not because you expect to sell it at a premium later.

Example Builds Around the Core Ultra 9 285

Video editing workstation

Pair the 285 with a B860 or Z890 board, 64 GB of DDR5, a fast NVMe SSD for projects, a second drive for archives, and a graphics card with a strong hardware encoder. Add a dual-tower cooler and a 750W power supply. The 24 cores shorten exports and the integrated media engine helps preview playback.

Developer and virtualization machine

Use 64 GB of memory or more, a PCIe 4.0 or 5.0 NVMe SSD, and a modest graphics card or none at all, since the integrated GPU drives displays. The 24 physical cores allow several virtual machines and containers to run side by side with fewer scheduling conflicts.

All-round gaming and creation PC

Combine the 285 with a high-end graphics card at 1440p or 4K, 32 GB of DDR5, and a 280 mm liquid cooler. At these resolutions the graphics card sets the frame rate, so the 285 supports gaming while still offering production strength.

Who Should Choose the Core Ultra 9 285

• Content creators and editors who want many cores, good media engines and a quieter, cooler chip than an unlocked flagship.
• Software developers compiling large projects and running containers, who benefit from 24 physical cores.
• Office power users and professionals on workstation-style prebuilts with sensible cooling.
• Builders who do not want to tune and prefer a stable chip with predictable thermals.

It is a weaker fit for competitive gamers who want maximum frame rates, since the unlocked K parts and AMD’s X3D chips are tuned for that, and for tiny builds where even 65W base power complicates cooling.

Cooling and Power Supply Guidance

Plan for the 182W turbo ceiling, not the 65W base figure. A dual-tower air cooler or a 240 mm to 280 mm liquid cooler suits sustained workloads, and a 360 mm radiator gives extra margin for long renders. A single-tower budget cooler will work for lighter use but may let temperatures rise under all-core loads.

For the power supply, a quality 650W to 750W unit is usually enough when paired with a mid-range graphics card, and 850W or more makes sense with a high-end GPU. Add the processor’s maximum turbo power and the card’s board power, then leave a healthy margin. As an example, 182W for the CPU plus 300W for a graphics card plus roughly 100W for the rest of the system totals about 580W at peak, which a good 750W supply handles comfortably with headroom for transient spikes.

Power Cost Example

Suppose your workstation averages 120W of CPU draw over a six-hour working day. That is 0.72 kWh a day, or about 21.6 kWh across a 30-day month. If you instead ran the same chip at a lower power limit and averaged 90W, the monthly figure would be 16.2 kWh. The difference is modest, and the larger benefit is usually reduced fan noise and heat in the room.

Buying Checklist

1. Confirm the motherboard is LGA 1851 with an 800-series chipset and that its BIOS supports your chip.
2. Choose DDR5 memory from the board’s qualified list, and install two modules.
3. Match the cooler to the 182W turbo ceiling rather than the 65W base power.
4. Check the board’s VRM quality and power limit defaults.
5. Decide whether you need overclocking; if yes, consider a K chip instead.
6. Verify the exact model name, since 285, 285K, 285T and 285HX serve different purposes.

Frequently Asked Questions

How many cores does the Intel Core Ultra 9 285 have?

It has 24 cores: 8 Performance cores and 16 Efficient cores. Because Arrow Lake does not use Hyper-Threading, it also has 24 threads.

What is the difference between the Core Ultra 9 285 and 285K?

The 285K is unlocked and rated at a 125W base power, so it can run at higher sustained clocks and be overclocked. The 285 is locked with a 65W base power, making it cooler and easier to cool.

What socket does the Core Ultra 9 285 use?

It uses the FCLGA1851 socket and requires a motherboard with an Intel 800-series chipset and DDR5 memory.

Is the Core Ultra 9 285 good for gaming?

It plays modern games well, especially at higher resolutions where the graphics card is the limit. For maximum frame rates at 1080p, AMD’s X3D processors and some newer Intel parts can be faster.

Does it include integrated graphics?

Yes, a small Xe-based integrated GPU is included, which is adequate for display output and media tasks but not for modern gaming.

Is the Core Ultra 9 285HX the same chip?

No. The 285HX is a laptop processor with a 55W base power and its own cache configuration. It shares the naming but not the socket or the desktop platform.